Rotary pump



ROTARY PUMP Filed March 16, 1931 2 Sheets-Sheet 0. im W ,5E M A. .,C W m u l@ Nm.. wf J En" ,WLM 7J S .l W .Y 32V a Z 9N M u ,.P /w /7 nl f sz fz V fw am J J. mw m M fof Wwf,

April 5, 1932.

w. B. CAMPBELL ROTARY PUMP Filed March 16, 1931 2 Sheets-Sheet 2 m we. om mm EL L TMW ,Vllur Patented pr. 5, `1932 'WILLIAI B. CAMPBELL, 0F LOS ANGELES, CALIFORNIA BOTARYQPUIP Application Iled latch 16, 1831. -Serial No. 523,028..y

This invention relates to improvements in rotary force pumps, and its objects are, to provide a simple, durable, inexpensive 'and efficient pumping device, capable of pump'- u ing air, gas, water, oil, or other fluid medium, to provide a pumping device always primed tor starting, to provide a solid blade in1peller which will impel a maximum quantity with minimum driving power, to protect the la bearings, and to avoid pressure on the runner., all edective to impel a liuid with force, with minimum wear of operative parts, and with minimum driving power.

lin carrying out my invention, I provide a liti pump casing enclosinga working space, a rotor mounted therein having a plurality of inclined blades, and induction and eduction ports in the casing, whereby a maximum quantity ot fluid medium is entrained, deiiected and delivered through the eduction tion.

`@ther details will be more fully set forth hereinafter, and delined in the appended claims.

ln 'the drawings: Figure 1 is a sectional plan talren on line lil-K1, of Fig. 2. Fig. 2 is a sectional elevational of the pump. big. 3 is a plan of the driving gear mechanism. Fig. l is a fragmentary and side elevation ot a runner showing an impeller blade projecting therethrough. Fig. 5 is a sectional elevation ot the runner. Fig. 6 is a sectional elevation ot the pump casing with certain ot the operative parts removed. llig. 7 is a side elevation ot the impeller. llig. 8 is a top plan ot the upper casing head.

The mechanical features of my improved pump consist ot a casing 9, having induction port 10, an upper casing head 11 having eduction port 12, and lower casing head 13, the casing elements enclosing a working chamber 14. Casing 9 has a longitudinal n, inwardly projecting abutment 15 between in- 'l' duction chamber 16 and eduction chamber 17. Rotatable shaft 18 is journalled .in casing heads 11 and 13, and is provided with a thrust bearing 19, in casing head 13, and ball bearing 20 in casing head 11, and has a coupling 21 whereby a driving shaft may he connected lith i ort with mairimum torce and minimum ric thereto. Shaft 18 is eccentrically disposed relative to working chamber 14. Stalling boxes 22, provided with packing 23, protect bearings 19 and 20.

5 Rotary drum 24, mounted within the working chamber, cooperates with the casing, and with blades 25, of rotor 26, to form a transi tion space 27, between induction chamber 16 and eduction chamber 17. Drum 24 has inclined and peripheral slots 28 throughwhich` blades project. Slots 28 have a certain width allowing relative angular movement of the blades therein, and, to maintain the cut-oil between the induction and eduction ports and chambers, shield members 29, slidable in grooves 30 in each end ofthe'drum, are provided. Shield members 29 overlap the edges of slots 28, and abutagainst blades 25 and against the walls of the drum, thereby maintaining closure of slots 28. Abutments fl 31 on drum ends 32, are preferably of rubber or other resilient material, and serve to limit movement of the impeller blades, preventing them from impinging on edges of slots 28, n thereby eliminating metallic .clicking noise 7" during the operation of the pump. 1

Drum 24, driven by the impeller blades, is mounted on projecting hubs 33, integral with the casing heads. Grooves 34 receive proj ect ing lianges 35 of the drum. This arrangement allows the impeller blades' to extend contiguous with the walls of the casing heads while traveling through transition passage 27. Eduction chamber 17 has an inclined bottom f 36 whereby the fluid medium travels therethrough with minimum pressure. Cap 37, at the upper end of the pump casing, encloses a discharge chamber 38 above eduction port 12.

In use, the pump is submerged, and a disi charge tube (not shown) is connected to cap E 37. The impeller blades travel consecutively through passage 27, and impinge on the fluid medium to be pumped, forcing the same from the induction to the eduction chamber. Drum 24 is driven by the impeller member. The i spiral inclination of the impeller blades serves to lift without compression, the medium to be pumped. The ports and transition passage 27 are all practically of the same area, thereby avoiding friction. The spirallili) ly arranged blades, complete cut-off attained by the drum and shields, andavoidance of congestion in the transition passage, all tend to produce an effective deep well pump.

What I claim is: Y

1. In a, pump, the combination with acasing and casing heads enclosing a worln chamber, said casing having induction and eduction ports and chambers; of a shaft journalled in the casing heads, the shaft, inclined blades on the rotor, a rotatable drum concentrically mounted relative to the casing disposed in the working chamand extending to cover said slots,

ber, and having longitudinal peripheral slots therein, said blades extending through the slots in the drum, said blades and slots being inclined relative to the axis of the' drum, shield members for the blades disposed rontiguously to the wall of the drum and blades, and cushioning abutment members disposed on the drum and limiting the angular movement ofthe blades. i

2. In a pump, v ingV and casing heads enclosing a working chamber, and having induction and eduction ports and chambers, of a'shaft journalled in the casing heads, a rotor fixed to the shaft and operable in the working chamber, a rotatable drum concentrically mounted in the working chamber and having spirally inclined slots in the periphery thereof, inclined blades on the rotor4 extending through the slots in the drum, said blades and slots being inclined relative to the axis of the drum, the slots being wider than the thickness of the blades, shield members for the blades disposed contiguously to the wall of the drum and cusls ioning abutment members limiting the-angular movement of the blades.

3. In a pump, ing and casing heads enclosing a working chamber and having induction and eduction ports and chambers, of a shaft journalled in the casing heads,

helical blades integral with the rotor, a rotatable slotted drum concentrically mounted in lthe working chamberyand eccentrically disposed relative to thef' rotatable shaft whereby said blades travel through a transition space between the drum wall and casing wall, shield members for the blades disposed within the drum and overlapping the drum slots whereby they are maintained in closed position during relative angular movement of the blades, and resilient abutment members disposed on the ends of the drum and serving to limit the angular movement of the blades. J

4. In a pump, the Vcombination with a casing and casing heads enclosing a working chamber, and having induction and eduction ports andchambers, of a shaft journalled in the casing heads, and disposed eccentrically relative to the casing heads and casing, a`

a rotor fixed toV the combination with a cas-k the combination with a casl a rotor fixed t6 the shaft,

rotorl fixed to the shaft ando arable in the working chamber, helical impe er blades integr'al with the rotor, a rotatable drum concentrically and operatively mounted in the chamber and having aseries of spiral slots in ,the periphery thereof conforming with the helical pitch of the blades, said blades extending in and through the slots, the slots being wider than the thickness of the blades, shield members disposed around the inner wall of the drum and overlapping said slots on either side of the blades, and cushioning abutment members for the blades fixed to the ends of the drum.

5. In a pump, the combination with a casing and casing heads enclosing a working chamber, and having' induction and eduction ports and chambers, and having an inwardly projecting and longitudinally extending abutment between the induction and eduction chambers, of a shaft jourualled lin the casing heads, a rotor fixed to the' shaft, helical.

blades integral with the rotor, said shaft being eccentric with the casing whereby the impeller blades will pass the abutment and along an opposed secti n of the casing wall, a cut-oil'` drum indepen ently rotatable within the working chamber and actuated by the impeller blades, and having helical slots throughi which the blades extend, said slots being wider than the thickness of the blades, and shield velements-slidable in annular grooves in the ends of the drum, and disposed on opposite sides of the impeller blades and overlapping the edges of the slots, andpositioned l contiguous tothe walls of the drum.

6. In a pump, the combination with a casing and casing heads enclosing a working chamber and having an inwardly projecting .and longitudinally disposed abutment, of a shaft journalled in th'e casing heads, a rotor on the shaft, helical impeller blades integral with the rotor and extending conti uous to the inner wall of the abutment an an opposed section of the casing wall, .and rotatable cut-off elements independently rotatable within the working chamber and actuated by the impeller blades.

7. In a pump, the ing and casing heads enclosing a working chamber, and having induction and eduction ports and chambers, and having an inwardly projecting abutment, of a shaft journalled in the casing heads, a rotor fixed to the shaft, helical impeller blades integral with the rotor and in intimate contact with the inner wall of the abutment and an opposed section signature. v

WILLIAM B. CAlWPBELL.

combination with a cas-- working chamber and actuated bythe whereof I hereunto aix my l 

